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Thursday, December 25, 2014
Explain the purpose of the following software utilities: - Drive Formatting
In the modern world people mainly rely on computers
which are machines that analyze data and present information. Computers rely on
softwares which are set of instructions that guide their general
operations.
In order for the softwares to work well they rely on
other softwares called "Utility Softwares". Utility softwares are just but normal
softwares but their work is to make a computer effective and convenient in its
operation.
One of the Utility software is a firewall. Firewalls are
softwares that prevents unauthorized entry into a computer system or a group of
computers known as computer network from hackers. Hackers can gain unauthorized use to
your computers to steal, delete or edit information. In a more serious case they may
lender your computer useless by introducing viruses that may damage your computer.
Firewall therefore limit who and what kind of information is shown to
different kind of people or computer accessories.
On the other
hand a computer relies on hard disk to keep information in form of a series of
magnetized and demagnetized areas. Since a computer is a digital devices it encodes
information and stores it in only two forms either 0 or 1. In a hard disk the
information is stored in a series of magnetized and non magnetized area. Magnetized area
represent 1 and non-magnetized area represent 0. When information is being written in a
hard disk it starts from the inside to the outside. Sometimes you may delete information
from a hard disk therefore leaving a series of gaps in the disk. Illustration -Consider
a parking area where cars and long trailers are parked and the parking is full. If 10
car drivers remove their vehicles which were in different locations the parking will
have many gaps but only cars can fit in the gaps not a trailer!. A watchman or a Carpark
Manager is forced to call the owners of the vehicles to rearrange the vehicles again in
order to have the vacant parking lots in one area.This is how the Disk Defragmenter
works it Consolidates the data in one area and the empty space in the other area leaving
a blank space which is more usable.
Finally the Drive formatting
Utility is a set of instructions that makes the layout of how data is stored in a disk.
Example, as seen above, data is stored through a series of magnetized and non-magnetized
area on the disk. The area to be magnetized are laid down by "formating" the disk
therefore dividing it into sectors and tracks which are ready to be fed with data for
storage.
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